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Finding the Fourth Proportional to 356,572.91, 534,855.29 and 86,702.58

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Solution

The fourth proportional to 356,572.91, 534,855.29 and 86,702.58 is: 130,052.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,572.91 : 534,855.29 = 86,702.58 : x
  2. Step 2: Convert to fraction form
    356,572.91/534,855.29 = 86,702.58/x
  3. Step 3: Cross multiply
    356,572.91x = 534,855.29 × 86,702.58
  4. Step 4: Simplify right side
    356,572.91x = 46,373,333,136.14
  5. Step 5: Solve for x
    x = 46,373,333,136.14/356,572.91
  6. Step 6: Final answer
    x = 130,052.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.